punch material

The springback angle increases with the increase of the punch round radius and clearances between the punch and the die while decreases with increase of the blank holder force, sheet thickness, friction coefficient and material hardening exponent.

回弹角随凸模圆角半径和凸凹模间隙的增大而增大，随压边力、板料厚度、摩擦系数和材料硬化指数的增大而减小。

Interfacial strength evaluation of semi-solid joining clad material by small punch test

半固态连接复层材料界面强度SP评价

Excellent wear & impact resistance, suitable for high speed press. It's the unique material of punch dies.

此牌号具有量好的抗弯性能, 用于高速冲床, 制作冲压模具专用牌号.

Then, the concept of end-face shape function of male punch is presented, and the impact of end-face shape function on the gear filling property and the material non-uniformity of forming were analyzed.

提出了凸模端面形状函数概念，并具体分析了端面形状函数对齿形充填性和材料变形不均匀性的影响；

The material on which data and instructions are recorded, e.g., magnetic disk, paper tape, floppy disk, magnetic tape, punch card, etc.

在其上可以记录数据和指令的材料，如磁盘、纸带、软（磁）盘、磁带、穿孔卡片等。